IPA: /ˈkɒtəni/
KK: /ˈkɑtəni/
Having a soft and fluffy texture similar to cotton.
The clouds in the sky looked cottony and light.
Cottony → It is formed from "cotton" (from Old French *cotton*, meaning a soft, fluffy fiber) and "-y" (a suffix used to form adjectives meaning characterized by). The word "cottony" describes something that is characterized by the softness and fluffiness of cotton.
Think of the soft, fluffy nature of cotton — that's why something described as cottony has that same soft quality.